Improvement in machines for turning axles



3 She'ets--Sheet 1. W. K` STEVENS- Machines fr Turning Axles.

910,154,197, Patented Aug.18,1874.

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THE GRAPHIC C0, PHDTO'UTHlv-I PARK PLACE, N-Y.

3Sheets--Sheet2.

W. K. STEVENS.

Machines for Turning Axles.` N0 15A,1g7 PatentedAug.1s,1s74.

THE GRAPHIC CU. PHOTDLITHrBQJ( 4I PARK PLACEJLY.

. 3Shets-S1heet3. W. K. STEVENS.

NOASAJQy n chinees for Turning Axles. l Patented Aug.18,1874.

THE GRAPHIC C0.PHDTO`LITH.39&4| PARK PLCEJLY.

lJNITED STATES PATENT OEErcE.

WILLIAM K. STEVENS, OF MANSFIELD, OHIO, ASSIGNOR OFTWO-THIRDS HIS RIGHT TO JAMES A. AND JOHN B. NIMAN, OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR TURNING AXLES.

Specification forming part of Letters Patent No. 154,197, dated August 18, 1874 application liled May 6, 1874.

To all whom it may concern Be it known that I, WILLIAM K. STEVENS, of Mansfield, Richland county, Ohio, have invented a new and useful Improvement in Machines for Turning Axles, of which the following is a specification, reference being had to l .the shaft, to the other end of which the cutter is attached; and consists in a shaft, one end of which is properly deflected from and parallel to its central axis, its center passing through a cylinder, in which are provided springs to allow the shaft a proper vertical movement. The cylinder is recessed at each end and supported in bearings moving on guides on the frame by means of a rack and pinion. Adjacent to the end ofthe cylinder is placed a gearwheel, meshing into a gear-wheel onV a feedshaft, which is rotated by a pulley-wheel, having an interior friction-clutch, and connected by intermediate bevel-gearing with the shaft, the opposite end of `the shaft being threaded and passing through the coincident apertures of clamping-nuts, the ends of the levers of which are pivoted in a slotted brace, and are properly jointed to close at the elevation. of a lever extending on one side beyond -the frame.

The invention further relates to a device for holding the thimble-skein, which consists of two sets of standards on opposite sides of the frame, eachset connected by a crank-shaft, at the ends of which are gear-wheels engaging gear-wheels on the ends of threaded shafts below, the other ends of which enter clamps sliding upon guides between the standards, and provided on their opposite edges with coincident apertures of suitable dimensions. At the other end of the frame is provided on each side a threaded standard, upon which are nuts for elevating or lowering a bar connecting the standards, at the center of which bar is a screw-shaft havin ga pressure-foot. At a suitable distance on each side ofthe screw, and secured to the frame, is placed a pair of clamping-danges connected by screws and placed opposite each other.

The object of the invention is to provide an effective means of turning axles, and holding the skein and material operated upon.

Figure l is a plan or top view of a device embodying the elements ofthe invention. Fig. 2 is a side elevation of same, partly in section. Fig. 3 is an end view of same. Fig. 4, a vertical central longitudinal section of the central parts of same. Fig. 5 is a detached view of the friction-clutch. Fig. 6 is a section of the sleeve It and shaft K. Fig. 7 is a detached view of a portion of the mechanism for holding the material operated upon. Fig. Sis a similar view of a part of the mechanism for holding the skein.

A, in the accompanying drawings, is a frame of an elongated parallelogram shape, supported by the legs a. The frame Bis secured at each side to the inside of the sides of the frame 4A, having on one side a bearing, through which passes the shaft b, Figs. 1 and 3, at the extremity of which, within the frame B, is provided the bevel-gear wheel O, Fig. l, the shaft b extending through bearings upon the outside of the frame A, its extremity being furnished with the recessed belt-wheel c loosely mounted thereon. Arranged to slide upon and rotate with the shafttfand between the wheel c and frame A, is placed the crown D of the friction-clutch, to the outer edge of which, in. ears, are pivoted the inner vsides of the links d, the outer ends of which are similarly secured in ears on the upper ends of the tail of the friction-bearings E, the tails of which slide in guides upon the opposite innerparallel sides of the bars F placed within the wheel, the facin gs of the bearings being convexed to conform to the concavity of theinner circumference thereof. Hence, as the crown D is forced outward, the bearings are expanded, and the motion of the wheel communicated to the shaft B.V The crown D is provided with an annular slot, into which enters the forks of the lever j', pivoted to a bearing-arm attached to the frame A. The Wheel C meshes into the beveled-gear wheel H, rigidly attached to one end of the hollow sleeve h, placed at right angles to the shaft b, and parallel to the longer sides of the frame. The innerv side of the sleeve h has a feather, ,.which enters the slot I on the feed-shaft K, so that the sleeve will slide upon but not rotate with the feed-shaft, which extends through bea-rings in the ends of the frame B, thence rearward, the slot Iv continuing to a spur-gear wheel, k, beyond which it passes through ahanger, L, a washer being there provided, beyond which the feedshaft is threaded to its extremity. A suitable distance in rear of the frame B the ianges of the hanger Z are bolted to the under side of the longer sides of the frame A, and provided with the dependent standards M, to the lower end of one of which is pivoted one-end of the bent lever m, which extends across the frame, projecting suitably on the opposite side, where a handle is provided. The lever is enlarged at its center, and furnished with a vertical slot, wherein are pivoted the lower ends oi levers N, the upper ends of which are similarly secured to the levers In, which are pivoted to the hangers Z, above which they have the gripers L", threaded on their interior, and of suitable size to clasp about the feed-shaft K, acting as a brake thereon, according as the lever is elevated. The wheel k meshes into the wheel O', rigidly secured to the rear ofthe cylinder P, which is recessed at each end so as to rotate in the bearings p, properly elevated above the frame A, and bolted on each side to the slides R moving upon ways attached to the upper inside central part of the longer sides of the frame A, and one of them having on its under side a rack, r, which is operated by a pinion, s, secured at the end of a crank-shaft, T, working in bearings on the under side of the frame, and outside thereof supplied with a crank, t, so that as the crank is rotated the cylinder P and attachments are moved parallel to the sides of the frame A. Through the center of the cylinder P is cut a rectangular aperture, provided at each end on opposite sides with shoulders u to receive the ends of flat springs V, the other ends of which have a bearing upon shoulders on opposite sides of the arm W, angular on that part which passes through the cylinder, whereon it is secured by the bolt w. The arm is angular at its center, and extends tapering in one direction on a common longitudinal axis, its extreme end' being provided with a frictionwheel, X', which exceeds in diameter the end of the arm, which, on the opposite side adjacent the cylinder P is thrown out of the line of its axis, continuing and tapering, however, on a line parallel, or nearly so, thereto, to a head, wherein is provided a turning-tool, x, of proper construction, secured by a set-screw. Adjacent the end of the frame, toward the last-named portion of the arm W, is provided on each side of the frame opposite each other the threaded standards Y, which are connected by the bar y, which has upon one end a threaded aperture, Z, fitting upon one of the standards, y, its other end being furnished with the notch z to receive the opposite standard, the nuts a' being provided on the standards to sustain the bar y, and the auxiliary nut b' to clamp it. bar y, `at its center, is provided with a threaded aperture, through which passes the screw A', having the operative head and pressure-foot a", as shown. At a proper distance on each side of the standards Y are braces b' upon which, opposite each other, are placed the clamping-anges D', Working on guides d', and the distance between them regulated by the right and left screws e', which pass through dependent lugs on the flanges. At the opposite end of the frame A, and properly distanced, are the plates E', the feet of which are secured to the top of the frame, while the upper portion crosses it at a proper height, the centers being provided with an aperture, F', of proper dimensions. On the opposite outer corners of the plates E' are the bearings f', which receive the opposite ends of the crank-rods H', provided at each end with the cranks i', between which and the bearing is secured the spur-gear wheel I', meshing into gear-wheels I" secured on the ends of the rods L', properly secured in bearings below the rods H', the other ends of the rods L' having male screws which enter female screws in the clampplates M', which are dovctailed to slide upon the plate E', and provided on their inner opposite edges with the apertures N', coincident in size, and opposite each other.

The skein is placed between the clamps M', and there held securely operating by the cranks i'. The crank t is then rotated, bringing the end of the arm W inside the skein. The wood or material to be operated upon is now placed between the clamping-anges D', which, and the presser-foot of the screw A', thus hold the material irmly in position lengthwise. The belt-wheelv c being in motion, the lever f is moved toward the cylinder P, causing the frictionbearings E to engage the wheel',` thus actuating the shaft b, and through the intermediate mechanism, the cylinder P rotating the arm W, the friction-wheel X of which follows the formation of the interior of the skein and guides the turning-tool w on the opposite end and over a corresponding area, the spring V permitting it to vibrate at right angles to 'the longitudinal axis of the skein.

As the operation progresses the crank t is rotated in a contrary direction to that last above stated, which moves the turning-tool w to new positions until the operation is accomplished.

The gripers L", bending about the threaded end of the feed-shaft K, serve to give it abearing and a steady movement, or lessen its speed, as desired, since when strongly applied the shaft is bound, the intermediate mechanism checked, so that the belt-wheel c turns upon the friction-bearings E Without affecting the movement of cylinder P.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. The clamping -iianges D', in combina with the rods H', gear-Wheels h' and I', crank 11', andf-plate E' having the aperture F', substantially as described and shown.

Inmtestimony that IV claim the foregoing improvement in machines for turningaxles, as above described, Ihave hereunto set my hand and seal this 18th day of April, 1874.

WILLIAM K. STEVENS( [n s] Witnesses:

TOM. E. BARROUS, J osEPH LEECH. 

